LP8725 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – Power Management Unit for Application/Multimedia Processors and Sub-Systems

LP8725 PRODUCT BRIEF
October 14, 2010
Power Management Unit for Application/Multimedia
Processors and Sub-Systems
General Description
This device is a multi-function, programmable Power Man-
agement Unit (PMU), optimized for sub block power solutions.
This device integrates two highly efficient 600 mA step-down
DC/DC converters configurable up to 800 mA load with Dy-
namic Voltage Scaling (DVS) through an I²C, two low noise
analog LDOs, three digital LDOs for up to 300 mA load current
each, two Low Input Low Output (LILO) regulators and an
I²C-compatible serial interface to allow a host controller ac-
cess to the internal control registers. The device also features
programmable power-on sequencing. LDO regulators pro-
vide high PSRR and low noise ideally suited for supplying
power to both analog and digital loads.
The device can be configured either as a Sub_PMU for mod-
ules (for example, camera/multimedia modules) or as a
stand-alone PMU that powers the processor itself.
“Notice: This document is not a datasheet. For more in-
formation regarding this product or to order samples
please contact your local National Semiconductor sales
office or visit http://www.national.com/support/dir.html.
Features
■ ^{Two High Efficiency Step-Down DC/DC Convertors,}
I_OUT = 600 mA, with a 4MHz switching frequency using
small 1µH inductors, with options up to 800 mA.
■ ^{Three digital LDOs for up to 300 mA load current each}
■ ^{Two low-noise analog 300 mA LDOs}
■ ^{Two low-input low output regulators, I}_OUT ^{= 300 mA}
■ ^{I2C-compatible interface for the controlling of internal}
registers
■ ^{Adjustable startup sequence through I2C or configuration}
■ ^{Thermal shutdown protection}
Key Specifications
■ ^{190 mV typ. Dropout Voltage on digital LDOs @ 300 mA}
■ ^{2% typ. Output Voltage Accuracy on digital and analog}
LDOs
■ ^{10 µVrms Output Noise on analog LDOs}
■ ^{±2% typ. Output Voltage Bucks up to 93% efficiency}
■ ^{30-bump micro SMD package (0.5 mm pitch)}
Applications
■ ^{Multi-media Processors}
■ ^{Portable Handheld Products}
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